Metal window frame and sash construction



3 Sheets-Sheet 1 A. HUTTGER METAL wrNDow FRAM- mn sAsH coNsTRUcTIoNoriginal Filed June 2 8,y 1934 30 Fzz. WVIV lf Mx-ch 2, 1937.

March 2, 1937. A. -HUTTGER METAL WINDOW FRAME AND SASH CONSTRUCTION@riginal Filed June 28, 19,254 fShefs-Sheet March 2, 1937. A. HUTTGER IMETAL WINDOW FRAME' AND SASH (IOIIS'IRUC-TIOA s sheets-sheet s OriginalFiled June 28, 1934 FI Cl/ Patented Mar. 2, 193iv PATENT OFFICE METALWINDOW FRAME AND SASH CONSTRUCTION August Huttger, Philadelphia, Pa.,assignor to Edward P. Huttger, Philadelphia, Pa.

Application June 28, 1934, Serial No. 732,891 Renewed September 24, 19363 Claims.

This invention relates to metal window frame and sash construction,and'it has more particular reference to that type of windows in whichthe Weight of the sash is counterbalanced by a 5 torsional spring putunder strain when the sash is closed, and when opened which i exerts itsforce upon connected mechanism to aid the opening operation and to holdthe same inthe desired position.

The primary object of this invention is to provide-awindow frame andsash assembly which is of minimum weight while of very durableconstruction.

Another object is to reduce air-infiltration to the minimum withincidental resistance to leakage from the out to the in side of thewindow in referred to, this invention consists in the features.

of construction, combinations and arrangements of parts, all ashereinafter particularly set forth and more specifically pointed out inthe claims.

In the drawings: f

Fig. I is a broken face view of a window frame and sash construction, inaccordance with-this invention, looking from the in side outwards, andhaving the left-hand frame jamb in lateral section to better'discloseunderlying parts.

Fig. II is a vertical section on the plane 'designated by, and lookingin the direction of, the

arrows II-II on Fig. I.

Fig. III is a similar section taken on the plane III-III of Fig. I.

Fig. IV is a horizontal section taken as desig- 40 nated by the arrowsIV-IV on Fig, I, and drawn to an enlarged scale.

Fig. V is a fragmentary section of the sill and lower sash stile showingthe means preventive of air-inltration, and taken approximately asindicated at V-V on Fig. I. l

Fig. VI is a perspective view of the meeting rail air sealing block.

Fig. VII is an enlarged fragmentary sectional det'ail of the upper sashstile and window frame head.

Fig. VIII is an enlarged sectional View of the meeting rail andassociated parts, as viewed in the direction of the arrows VIII- VIII onFig. I.

Fig. IX is an enlarged detail view, partly in section, of the upper sashoperating means.

Fig. X is a fragmentary perspective view of the upper end of theright-hand frame jamb, top sash and head.

Fig. XI is a fragmentary perspective view of a tcp corner of the uppersash and also showing a portion of the attached operating rack.

Fig. XII is a sectional view corresponding in the main with FigJX butillustrating a modified form of the operating-spring stabilizing means;and,

Fig. XIII is a somewhat similar section view of a further form of springstabilizer.

Like characters of reference are applied to corresponding parts in allthe views.

Referring more in detail to the drawings the window frame and sashconstruction illustrated comprises upper and lower sash I, 2respectively; and a frame embodying left and right jambs or jamb-boxes3, with a head ll and sill 5.

The sill 5, as best understood from Figs. II, III, and V, comprisesouter and inner components 6, l, respectively, of sheet metal, theformer li having a downward lip at 8, and an inner vertical portion 9,finished-off with a horizontalange I0. The inner sill component 'l is ofinverted channel-formation with ilanges I I, I2 of diierent depth, theformer or shorter one I I being located 'in parallel relation with thesill vertical 9 to provide a groove in which asuitable weathering stripI3 is appropriately secured; while the longer flange I2 constitutes theinside lower facing of the window frame. In order to prevent accidentalremoval or displacement of theweathering strip I3, the flange I I hasits free edge-Fig. V- inwardly bent at Il.

The frame jamb boxes 3 being counterparts, or a right and a left, thefollowing description will be limited to the singular, inasmuch as thoseconversant with the art `will readily understand their formation;accordingly I will proceed to explain the left-hand jamb box 3 in de.-tail. This jamb box 3, it will be readily seen from Fig. IV, moreparticularly, is fashionedfrom sheet metal to provide an inner facingflange I4 at right-angles to the main lateral wall or back I5, an outerfacing I6, and an inner ange -or lateral I1 at right angles to thefacing I6, the free edge of said lateral l1 serving, as lateron-explained, to guide the sash I, 2 during the raising and loweringoperations.

lMedially vertical of the jamb main lateral wall or back I5, I attachthe parting strip I8, as by screw-bolts I9. This parting strip I8, asbest shown in Fig. IV, is of channel-leg or T-formation incross-section, and consists of a length of sheet metal havingretroversions 20, longitudinalfor suitable weathering. 23.This.weathering 23 clinched-over.

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is approximately fashioned with beadings 24 that grip the parting stripretroversions 20, and opposed outwardly-flexed flanges 25 having theirfree edges rolled inwardly at 26 .for coaction with the respectivevertical sash rails 21, and said weathering 23 is conveniently slidalong the parting strip I8 with suitable clearances therein for passageof the heads of the screw-bolts I8 aforesaid, in an obvious manner.

The window frame lambs 3 are attached to the sill 5 by integral tongues28 passed through registering slots 29 in said sill and being then Thewindow frame head, Figs. II. VII, Aand X more particularly, comprises amain component, of somewhat channel-formation; that is to say, itembodies an inner vertical wall or facing portion 30 having its freeedge horizontally angled at 3|, to afford support for suitable caulkingor plaster 32. The main portion or web 33 of the frame head islongitudinally grooved at 34 for reception of the upper sash top rail35, and suitable weathering 36; and it has its outer portionupwardly-angled to provide an outer facing 31, with the free edgeinwardly-turned horizontal at 38. Intermediate the facing 31 andgrooving 34 is a reinforce consisting of a length of sheet metalretroverted at 39 to provide a vertical wall 40 and a horizontal flange4|, respectively secured to the grooving 34 and horizontal 38 inapproved manner; while the window frame head, Just described, is securedto the jambs 3 by clinched over tongues,

, 42 on the latter engaged through slots 43 in the l tive closures; andthat all of the former; as previously set forth in connection with theparts 28, 29.

The sashes I, 2 are substantially of similar construction, or comprisethe spaced vertical or side rails 21, Fig. IV, hereinbefore referred to,and conventional flat glazing strips 44; said vertical side rails 21extending sidewise into close proximity with the lateral or back WallsI5 of the window frame jamb boxes 3, and being inwardly stepped at 45,or towards each other, for attachment, as by. rivets 46, of toothedracks 41, preferably made from strip metal. The top rail 48, of thevupper sashy I is of similar construction to the side rails 21, exceptingthat its glazing strip 49, Figs. II and XI, is extended upwardly andchanneled at 50 to abut the top frame horizontal flange 33, and therebymore effectively prevent air-infiltration past the weathering 36 in thegrooving 34 aforesaid. The upper sash bottom rail 5|, Fig. VIII, is alsoof somewhat corresponding formation with the lower edge in- -wardlyangled at 52, or turned horizontal, while the associated glazing strip53 has its inner edge formed of somewhat U-section or channeled at 54,for reception of suitable weathering 55, for coaction with thedownwardly-angled lip 58 of the lower sash top rail 51. The lower sashbottom rail 58, Fig. II, is of conventional formation, and of a depth toseat snugly on the sill component 6 when lowered, and it is eitherfitted or formed with appropriate spaced-lifts, or a continuous liftprojection 59. It is to be here noted that all of the weatherings I3,23, 36, and 55 are preferably fabricated from thin springy stripmetal soas to form effective seals at the respecsash side, top

tends coaxially' of the and bottom, rails are miter-jointed as indicatedat m in Fig. XI.

At the meeting rails 5|, 51 of the upper and lower sash I, 2, and at theends thereof I flt in the side jamb boxes 3, air sealing blocks 68, suchas best shown in Fig. VI, each such block being substantially cruciformor of T-configuration, that is to say the leg portion 6| is providedwith longitudinally extending lugs 62, apertured at 83 for passage ofattaching means, such as a spaced pair of the parting strip I8 securingscrew-bolts I8; while the lower end of the leg 6| and the top and bottomedges of the sealing block cross-portion 84 are beveled at 65, 66,respectively, see Figs. II and VI more particularly, so as toaccommodate any side play in the sashes I, 2.

Referring now to the means for controlling the respective sash I, 2, Iattach within each frame jamb-box 3, a stepped bracket 61, as by screwbolts 61; Figs. I, III, IX, and XII, having a bearing pin- 68 on whichis freely journaled an integral gear 69 and miter pinion 10, the formerof which meshes with the associated sash rack 41, as clearlyunderstandable from Fig. III more particularly. The respective miterpinions 10, on the other hand, mesh with corresponding pinions 'Ilintegral with the lower ends of sleeve-like members 12, freely supportedon vertical extensions 13 integral with the associated brackets 61. Eachsuch sleeve-like number 12 is prevented from vertical lifting, or axialdisplacement, by means of a headed pin 14, fitted into an axial boring15 of the bracket extension 13, and a diametric-cotter pin 16, as bestshown in Fig. IX; while diametrically-opposed holes 11 are provided inthe sleeve 12 for ease in assembling or disassembling said parts.

Each sleeve-like member 12 is formed at the upper end with a lateralflange 18 and a vertically-directed annular portion 19, both concentricwith the axis thereof and jointly affording bearing for a thin tube 80,functional as a stabilizer for a torsional spring 8|, said spring havingits lower end 82 passed through a suitable hole in the lateral flange18. The tube 88 exspring 8|, and its upper end slidingly cooperates withan inverted cup 83 .securely attached, as by a rivet 84 Figs. III, XII.

and XIlI, to the horizontally-flanged portion 33 of the Window framehead 4; while the torsional spring 8| has its upper end passed throughahole therein and clinched over at 85, in an obvious manner. Thus it willbe readily seen that each tube 80 functions as a floating-support orcentralizing-stabilizer to retain the associated spring 8| in correctoperating alignment.

Instead of the tube 80 being slidably-fltted internally of theassociated spring 8|, as shown in Figs. I, III, IV, and IX, it may befloatingiysupported intermediate the sleeve member annular portion 19and the inverted cup member 83, as indicated in Fig. XII; or, it may besimilarly supported by the sleeve member lateral flange 18, and locatedoutside the spring 8|, as indicated in Fig. XIII. when so requisitionedor deemed advisable.

To close in the window frame jamb boxes 3 on the inside I make use ofanglesection elements 86, Fig. IV, which are fabricated from sheet metallengths, adapted to snugly fit between the frame top 4 and sill 5. Eachsaid verted at 81 for stiffening purposesL and the inner portion isturned at right angles thereto, as at 88, and stepped along its freeedge, as at I8; while the outer portion 80 of said element is corelement88 is retrrespondinglyangled in spaced parallelism with the innerangling 8B to provide a facing, with'its free edge inwardly turned at 9|to engage the frame jamb-box lateral or back wall le. These closureelements 86 are 'secured in place by screw bolts 92 passed through thespacing aiorded by the parts 88, 90, and threadedly engaged into thejamb-box lateral or back wall l5. A

In assembling the improved Window of my invention, and assuming theframe and sashes l, 2,

are completed, with the jamb closures 3% detached, it will be readilyunderstood that the outer or upper sash l is rst slid into position inthe frame, whereupon the inner or lower sash is correspondingly located,4when the jamb closures 86 are placed in position and secured by thescrew bolts 92. The assembled window is now complete for installationwhere and when de sired. It will also be readily appreciated from theforegoing that windows constructed as hef'einbefore set forth can becheaply manufactured with a minimum of material, time and labor, costs;while they are adapted for compact transportation and setting-up in thefield with a minimum of time and labor expense.

While it will be apparent that the 'illustrated embodiments of myinvention herein disclosed are well calculated to adequately full theobjects and advantages previously stated, it is to be understood thatsaid invention is susceptible of variation, modification and changes.within the spirit and scope of the following claims and as the prior artproscribes.

Having thus described my invention. what ll. claim, and desire to secureby Letters Patent. is:-

1. A sheetsmetal window frame comprising opposed jambs defining spacedchambers for receiving sash balancing devices, sashes having rails, aparting strip between the chambers, said strip including flanges, asheet metal weather strip including resilient beads adapted to yieldablyengage the flanges of the parting `strip throughout their length, saidbeads terminating in outwardly flexed anges adapted to yieldably engagethe sash rails.

2. A sheet metal window frame comprising opposed jambs including a backwall and angularly disposed flanges forming in conjunction with theback' wall spaced chambers for receiving sash balancing devices, thesashes having rails slidable between the chambers, a parting stripbetween the sash rails andchambers, said strip comprising spaced websand anges, a sheet metal weather strip having beads on its longitudinaledges for yieldably engaging the anges of the parting strip throughouttheir length, said bead terminating in outwardly exed iianges toyieldably engage the opposed faces of the rails.

3. A sheet metal window frame comprising opposing jambs, each said jambincluding two isolated chambers, said chambers being adapted for thereception of individual sash operating and balancing means, sasheshaving side rails, and a parting strip between the isolated chambers including flanges yieldably coactive with the sash side rails throughouttheir length, whereby air iniiltration from one chamber to the otherthrough the window frame is prevented.

AUGUST HUTTGER.

